Modal logic, an extension of classical logic, investigates the modes of truth such as necessity and possibility. Its development has been closely intertwined with advances in proof theory, a field ...

Aristotle's logic provides the foundation for the dialectical theory of change. The term contradiction is one we will return to in explaining dialectics, and also organisational science and systems ...

We associate the semantic game with chance moves conceived by Blinov with Blamey's partial logic. We give some equivalent alternatives to the semantic game, some of which are with a third player, ...